Dispatches - Afghanistans Dirty War: As the US apologises for the recent killing of civilians in air strikes on the Farah province of Afghanistan Dispatches examines the effect these military operations are having on US-Afghan relations.Directed by Emmy and Bafta award-winning film-maker Tom Roberts this programme investigates a similar American assault on the village of Azizabad last year in which scores of civilians including dozens of women and children were killed.The film examines the reaction of the US forces - which initially declared the operation a success and denied any civilian deaths - and looks at how despite evidence to the contrary the US army remains robust in denying any wrongdoing.